Chapter 3 OEM7 Receiver Operation
OEM7 Installation and Operation User Manual v4
60
3.5.2 PDP and GLIDE Configurations
Pseudorange/Delta-Phase (PDP) and GLIDE position filters can be used for single-frequency
single point, WAAS or DGNSS positioning. Refer to the
PDPFILTER
command and
PDPMODE
command in the
OEM7 Commands and Logs Reference Manual
.
To reset the PDP or GLIDE filter:
pdpfilter reset
To enable the PDP filter:
pdpfilter enable
Ensure the
PDPFILTER
command is used before the
PDPMODE
command. Set the PDP type
and kinematic type according to the application. For most kinematic applications:
pdpmode relative dynamic
or
pdpmode relative auto
The rest of the setup is position type and log dependent according to the application. For
example, details of the
RTKSOURCE
,
PSRDIFFSOURCE
,
INTERFACEMODE
,
SERIALCONFIG
and other configuration commands are outlined in the
OEM7 Commands and Logs Reference
. Also refer to the NovAtel application note
APN-038 Pseudorange/Delta-Phase (PDP) and
available from our web site at
3.6 STEADYLINE
The STEADYLINE
®
functionality helps mitigate the discontinuities that often occur when a GNSS
receiver changes positioning modes. The effect is especially evident when a receiver transitions
from an RTK position mode solution to a lower accuracy “fall back” solution, such as DGPS,
WAAS+GLIDE or even autonomous GLIDE (see
Figure 19: Positioning Change Without
below). Smooth transitions are particularly important for agricultural steering
applications where sudden jumps are problematic.
Figure 19: Positioning Change Without STEADYLINE
The STEADYLINE feature internally monitors the position offsets between all the positioning
modes present in the receiver. When the current positioning mode becomes unavailable, the
receiver transitions to the next most accurate positioning mode.
The setting in the
STEADYLINE
command determines how the receiver transitions to the next
positioning mode. The following sections describe the STEADYLINE modes.
Refer to the
STEADYLINE
command in the
OEM7 Commands and Logs Reference
for more information.
